Propose an efficient synthesis for the following transformation: H The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer A B D t-BuOK 1) MeMgBr: 2) H30* Na Cr207 H2SO4 NaOH E F G H H2, Lindlar's cat. H2, Pt TSCI.py dilute H2SO4 J L DMP or PCC 1) LiAlH.: 2) H30* 1) EtMgBr: 2) H30+ 1) BH3-THF: 2) H2O2. NaOH